this derivation will be built:
  /nix/store/l9nrxgwg4ijammwg29yp3s51ypn9d189-treefmt-check.drv
building '/nix/store/l9nrxgwg4ijammwg29yp3s51ypn9d189-treefmt-check.drv'
treefmt-check> treefmt v2.5.0traversed 314 files
treefmt-check> emitted 246 files for processing
treefmt-check> formatted 246 files (1 changed) in 355ms
treefmt-check>  M harmonia-utils-hash/src/reader.rs
treefmt-check> diff --git a/harmonia-utils-hash/src/reader.rs b/harmonia-utils-hash/src/reader.rs
treefmt-check> index 2f65971..b926878 100644
treefmt-check> --- a/harmonia-utils-hash/src/reader.rs
treefmt-check> +++ b/harmonia-utils-hash/src/reader.rs
treefmt-check> @@ -111,9 +111,7 @@ impl<R: AsyncRead> AsyncRead for HashReader<R> {
treefmt-check>                  match this.state.lock() {
treefmt-check>                      Ok(mut guard) => guard.update(new_bytes),
treefmt-check>                      Err(_) => {
treefmt-check> -                        return Poll::Ready(Err(io::Error::other(
treefmt-check> -                            "hash state lock poisoned",
treefmt-check> -                        )))
treefmt-check> +                        return Poll::Ready(Err(io::Error::other("hash state lock poisoned")));
treefmt-check>                      }
treefmt-check>                  }
treefmt-check>              }
error: Cannot build '/nix/store/l9nrxgwg4ijammwg29yp3s51ypn9d189-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/k5546bv74gqz8rdflzdn7rk2zywq27a6-treefmt-check
       Last 19 log lines:
       > treefmt v2.5.0traversed 314 files
       > emitted 246 files for processing
       > formatted 246 files (1 changed) in 355ms
       >  M harmonia-utils-hash/src/reader.rs
       > diff --git a/harmonia-utils-hash/src/reader.rs b/harmonia-utils-hash/src/reader.rs
       > index 2f65971..b926878 100644
       > --- a/harmonia-utils-hash/src/reader.rs
       > +++ b/harmonia-utils-hash/src/reader.rs
       > @@ -111,9 +111,7 @@ impl<R: AsyncRead> AsyncRead for HashReader<R> {
       >                  match this.state.lock() {
       >                      Ok(mut guard) => guard.update(new_bytes),
       >                      Err(_) => {
       > -                        return Poll::Ready(Err(io::Error::other(
       > -                            "hash state lock poisoned",
       > -                        )))
       > +                        return Poll::Ready(Err(io::Error::other("hash state lock poisoned")));
       >                      }
       >                  }
       >              }
       For full logs, run:
         nix log /nix/store/l9nrxgwg4ijammwg29yp3s51ypn9d189-treefmt-check.drv